Track-harrow.



A. A. GUERNE.

TRACK HARROW.

APPLICATION FILED AuG.27. I9I4.

1,178,230.' Patented Ap1.4,1916.

Irl/

mE COLUMBIA I'IJINoGIc/Ivrf cu., WASHINGTON, u. c.

ALFRED A. GUERNE, OF KALAMAZOO, MICHIGAN.

TRACK-HARRGW.

Specication of Letters Patent.

y Patented Apr. 4, 191e.

Application iled August 27, 1914. Serial No. 858,901.

To all 'whom t may concern Be it known that I, ALFRED A. GUERNE, a citizen of the United States, residing at Kalamazoo, in the county of Kalamazoo and State of Michigan, have invented certain new and useful Improvements in Trackarrows, of which the following is a specication. y

This invention relates to improvements in track harrows.

The objects of my invention' are: First, to provide-a track harrow having improved -means for adjusting the height of the harrow frame relative to the transporting wheels so as to regulate the depth which the teeth will project into the ground. Second, toprovide in a track harrow, provided with a scraper, improvedmeans and connections for raising and lowering `the scraper. Third, to provide in a harrow improved means for attaching the harrow teeth to the frame. i

Further objects, and objects relating to details and economies `of structure and` operation will delinitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the place. Fig. V I `the line 5 5 of Fig. II, showing the manfollowing specification.

The invention is clearly defined and pointed out in the claims.

A structure constituting a preferred embodiment of my invention is clearly illustrated in the accompanying drawings forming a part of this specification, in which:

Figure I is a perspective view of a harrow embodying my invention. Fig. IIl is an enlarged detail perspective view ofthe front end of the harrow showing the connections between the harrow frame and the casting in which the front transporting wheel is journaled. Fig. III is an enlarged detail perspective view showing the connection for lifting the scraper. Fig. IV is a top plan view of one of the blockscarrying the harrow teeth,V showing the manner in which `the harrow tooth is clamped in is a detail sectional view on nerof attaching the tooth blocks to the harrow frame.

y In the drawings, similar reference numerals refer to similar parts throughout the several views, and the sectional view is taken looking in the direction of the little arrows at the ends ofthe section line.

Considering the numbered parts of the drawing, the harrow frame is made up of the channel bars l 'and 2 and the rear bar 2, which are connected together at their ends so as to form substantially an isosceles tri.ngle. A bar 3 is connected at its forward end to the forward ends of the y.channel bars l and 2, and is connected at 1ts rear end to the rear bar 2 at substantially its mid-point. Channel bars 33 are provided within the triangle formed by the channel bars l, 2 and the rear bar 2 and running parallel to said channel bars 1 and 2. These bars 3 are connected at their forward end to the bars l and 2 and at their rear end to the rear bar2. Both the channel bars l and 2 and the channel `bars 3 carry harrow teeth t which are forwardly inclined and eachv of which is carried in a tooth block-5. The block 5 is of such a width as to t snugly between the flanges of the channel bar and the top and bottom edges are parallel to each other. A recess is provided in the face of the block and an opening is trally of said recess through lwhich the shank of the eye bolt 6 passes. The rear face of the block is recessed to accommodate the nut 7. The harrow tooth l eX- tends through the eye of said eye bolt and lies in' notches 9 provided at the top and bottom of the block 5 and so located` with reference to each other as to give the tooth the proper slant. The tooth l lies in the notches 9 and extends through the eye of the'eyebolt 6. By turning up the nut 7 the center of the tooth is sprung inwardly slightly causing the latter to engage tightly the notches 9 so `that, the tooth is gripped securely in position. By this means, the tooth is held securely in place and, at the same time, can be quickly and easily removed. The tooth block carrying the tooth lits between the anges of the channel bar and is secured thereto by the shank of the eye bolt 6 which extends through a suitable opening in the base of the channel bar and is provided with a nut 7, as clearly shown in Fig. V.

`18 is the front transporting and guiding wheel which is provided with the caster 18 to which the draft is attached by suitable means. The caster 18 is journaled in a collar 17 which is provided at its upper end with a bracket having a pair of alined lugs 17, and at its lower end with a lug 17 in line with the lugs 17. Links 16 connect the lug 17 with the member 32 carried by the front end of theharrow'frame. Links 16 are also provided extending parallel to the links 16 and pivoted to said member 32 and to the. outer sides of the lugs 17. By means of this parallel link connection the collar is maintained in a vertical position. Links 14 are pivotally connected to the inner sides of the lugs 17 and are c0nnected at 14E at their other ends to the forked end 13 of the adjusting rod 13. A link v15 is pivotally connected to the links 1&1 near their rear end, and said link 15 is pivoted to the member 32 in line with the piv ots of the links 16.

In a suitable bracket carried by the bar 3 is journaled a worm gear 10 provided with a projecting lug 10 to which the rear end of the adjusting` rod 13 is connected. A shaft 11 ist journaled in a suitable bracket carried by the bar 3 and this shaft 11 carries a worm 11 meshing with the'worm gear 10. The worm is operated by means of the hand wheel 12 provided at the upper end of the shaft 11.

` Upon brackets 22, 22 carried by bars 1, 2 and `3 are suitably j ournaled the bell crank levers 21-21 in the lower ends of which the transporting wheels 23 are jeurnaled. The upper ends of said bell crank levers are connected by the adjusting rods 19 with the lug 10 on the worm gear 10. Said adjusting rods 19 are provided with turn buckles 20 for adjusting Athe length thereof.

The scraper 24: which extends across the rear of the harrow is concave in form and said scraper is pivotally connected to the rear bar 2 so as to swing with reference thereto. Upon a bracket 31 carried bythe rear bar 2 is pivoted a bell crank lever 26. The other arm of said bell crank lever is pivotally connected at 29 with the adjusting bar 28, the forward end of which is connected to a hand lever 30 carried by the bar 3 and by means of which the scraper is raised and lowered. The brace 31 aids in supporting the bracket 31.

From the description of the parts given above, the operation of the structure should be very readily understood. The harrow frame is carried at its front end by the links 16 and 16 which are connected to the collar 17 and the frame is carried at its rear end by the bell crank levers 21 connected at their lower ends to the wheels 23. It will thus be seen that by manipulating the hand wheel 12'and thus rotating the worm gear 10 the harrow frame will be lifted away from the ground due to the pull of the rods 19 on the upper ends of the bell crank levers 21 and the push of the rod 13 upon the links 111 and 15 which will tend to raise the rear ends of links 16 and 16. It will Valso be seen that if the lever 30 is pulled forward the bell' crank lever 26 will be rocked to lift the lower edge of the scraper 24s The harrow teeth are securelyheld in place by the lblocks 5 which fit in the channel in the channel bar and the teeth are kept from twisting or working loose by means of their engagement in the notches 9 of said blocks.

I am aware that the particular embodiL ment of my invention which I have here set forth in susceptible of considerable variation without` departing from the spirit of my invention, and, therefore, I do not wish to be restricted to the same. I have found, however, that this particular form vis to be preferred and, therefore, I desire to claim the same specifically aswell as broadly as indicated by my appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a harrow of the class described, the combination of a frame carrying a pluralityof harrow teeth, a front guiding wheel providedwith a caster, a collar in which said caster is journaled, parallel links connecting said collar with the front part of said harrow frame to maintain said collar f1.

extending forwardly therefrom, links con-` necting said collar to the forward end of said adjusting rod, a link connecting the rear ends of said last mentioned links to the front end of said frame, bell crank levers j ournaled on said frame near the rear thereof, transporting wheels suitably journaled in the lower ends of said levers, connecting rods connecting the upper ends of said levers with said lug on the worm gear, and means for actuating said worm, all-coacting substantially as described for the purpose specified.

2. In a harrow of the class described, the combination of a frame carrying a plurality of harrow teeth, a front guiding wheel` provided with a caster, a collar in which said caster is journaled, parallel link conn nections between said collar and the front end of said frame whereby said collar is maintained in vertical position, and means for raising and loweringv said frame.

In witness whereof, I have hereunto set my hand and seal in the presence of two witnesses.

ALFRED A. GUERNE. l[3a. s] Witnesses:

' LUELLA G. GREENFIELD,

MATTIE GREGORY.

Genies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents Washington, D. C. 

